EP0995485B1 - Dispositif d'agitation d'un liquide dans un réacteur et d'injection d'un gaz dans ce liquide - Google Patents
Dispositif d'agitation d'un liquide dans un réacteur et d'injection d'un gaz dans ce liquide Download PDFInfo
- Publication number
- EP0995485B1 EP0995485B1 EP19990402459 EP99402459A EP0995485B1 EP 0995485 B1 EP0995485 B1 EP 0995485B1 EP 19990402459 EP19990402459 EP 19990402459 EP 99402459 A EP99402459 A EP 99402459A EP 0995485 B1 EP0995485 B1 EP 0995485B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- turbine
- liquid
- gas
- blades
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000007788 liquid Substances 0.000 title claims description 58
- 238000003756 stirring Methods 0.000 title description 11
- 238000013019 agitation Methods 0.000 claims description 17
- 239000006185 dispersion Substances 0.000 claims description 13
- 239000007789 gas Substances 0.000 description 50
- 238000002347 injection Methods 0.000 description 17
- 239000007924 injection Substances 0.000 description 17
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 10
- 239000012071 phase Substances 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 239000010802 sludge Substances 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 7
- 230000009471 action Effects 0.000 description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 description 5
- 238000010926 purge Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 238000007654 immersion Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 238000011282 treatment Methods 0.000 description 3
- XXONZJKORUUFIZ-UHFFFAOYSA-N 3-sulfanylpyridine-2-sulfonamide Chemical compound NS(=O)(=O)C1=NC=CC=C1S XXONZJKORUUFIZ-UHFFFAOYSA-N 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000013213 extrapolation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000006213 oxygenation reaction Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002964 rayon Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 241000861223 Issus Species 0.000 description 1
- 241000940835 Pales Species 0.000 description 1
- 206010033546 Pallor Diseases 0.000 description 1
- 230000004071 biological effect Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000007792 gaseous phase Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1278—Provisions for mixing or aeration of the mixed liquor
- C02F3/1284—Mixing devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
- B01F23/2331—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
- B01F23/2331—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements
- B01F23/23311—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements through a hollow stirrer axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
- B01F23/2331—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements
- B01F23/23314—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements through a hollow stirrer element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/2366—Parts; Accessories
- B01F23/2368—Mixing receptacles, e.g. tanks, vessels or reactors, being completely closed, e.g. hermetically closed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
- B01F23/2336—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the location of the place of introduction of the gas relative to the stirrer
- B01F23/23363—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the location of the place of introduction of the gas relative to the stirrer the gas being introduced above the stirrer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/111—Centrifugal stirrers, i.e. stirrers with radial outlets; Stirrers of the turbine type, e.g. with means to guide the flow
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/115—Stirrers characterised by the configuration of the stirrers comprising discs or disc-like elements essentially perpendicular to the stirrer shaft axis
- B01F27/1155—Stirrers characterised by the configuration of the stirrers comprising discs or disc-like elements essentially perpendicular to the stirrer shaft axis with interconnected discs, forming open frameworks or cages
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/19—Stirrers with two or more mixing elements mounted in sequence on the same axis
- B01F27/192—Stirrers with two or more mixing elements mounted in sequence on the same axis with dissimilar elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/50—Mixing receptacles
- B01F35/53—Mixing receptacles characterised by the configuration of the interior, e.g. baffles for facilitating the mixing of components
- B01F35/531—Mixing receptacles characterised by the configuration of the interior, e.g. baffles for facilitating the mixing of components with baffles, plates or bars on the wall or the bottom
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Definitions
- the present invention relates to a device for agitating a liquid in a reactor and injecting a gas into this liquid, comprising a drive device arranged above the reactor, provided with a shaft of vertical outlet equipped at its end with at least one axial flow mobile immersed in the liquid.
- the gas injected into the liquid can be either an oxygenated gas with a proportion of oxygen ranging from 20 to 100%, either carbon dioxide or a ozonated gas, a biogas ...
- the liquid in which the gas must be injected is disposed in reactors used in particular for the treatments biological effluents and whose height generally varies from 2 to 10 meters deep.
- reactor means "basin” natural (lagoon, pond, lake 7) and “reservoir” walls more or less close and open or closed.
- the reactors in which these systems make it possible to inject gases generally contain activated sludge.
- These reactors can be either natural basins or open-cast reactors with close walls, or closed reactors, under pressure or not.
- patent EP-0 583 509 of PRAXAIR Technology, Inc. discloses a system characterized mainly by a propeller located in a hollow shaft and resulting, during its rotation and by Vortex effect from the surface of the liquid, gas and liquid under a submerged lid.
- the gas-liquid mixture thus formed is propelled downwards.
- the gas bubbles not having dissolved go back to a corresponding radius of action overall to that of the cover where they are recovered to be at reinjected again.
- Make-up gas supply and purge, as well as the level optimum liquid in the lid, are regulated by the prevailing pressure under the lid.
- bottom systems porous, with injection of gas and stirring means. These systems have a capacity fixed and limited oxygenation, and tend to foul.
- bottom devices including jets or the known device under the brand name "Ventoxal” with gas injection (air enriched with oxygen, or pure oxygen).
- the "Ventoxal” system developed by the applicant is composed of a pump, a Venturi type injection system, a distributor flow and an ejector-nozzle pair, for which the injection pressure of gas depends on the water level and remains mainly above 1.5 bar absolute. The agitation obtained is satisfactory in the bottom of the basin but can be average in the rest of the volume.
- the purpose of the invention is to propose a device for agitating a liquid and injecting a gas into this liquid, of the type mentioned above, to efficiently transfer a gas into a liquid and to ensure agitation allowing the setting and the suspension in suspension of particles.
- the output shaft of the device drive also carries a self-suction turbine immersed in the liquid and can be driven by the output shaft, and the latter is coaxially wrapped by a cylinder attached to its upper end at drive device and whose lower end opens into the turbine; in the upper end of the cylinder is pierced an opening injection of a gas into an annular gap defined by the shaft and the cylinder.
- the output shaft of the drive device drives the turbine and the propeller at the same speed.
- the rotation of the turbine causes the suction of the gas through the hollow cylinder enveloping the output shaft of the drive device. This turbine propels the gas-liquid dispersion radially.
- the device comprises means for directing towards the propeller the gas-liquid dispersion expelled radially by the turbine.
- said means include an annular baffle box enclosing the turbine and profiled in order to direct towards the helix the flux coming radially from the turbine, and a set of substantially vertical plates forming counter-blades, arranged radially and fixed to the deflector.
- said means may comprise a mobile additional agitation and preferably rotated by the shaft of output, or any other means, preferably at the same speed of rotation as that of the tree.
- the baffle that envelops the turbine flaps the gas-liquid dispersion to the propeller that propels gas bubbles to the bottom, and creates a flow of liquid pumping allowing the agitation of the basin.
- Counter blades allow to direct the different liquid and gaseous flows in order to maximize the performance in terms of transfer and agitation.
- FIG. 1 is a view in vertical axial section of a form of implementation of the liquid stirring device and gas injection in this liquid according to the invention.
- FIG. 2 is an elevational view of the device of FIG. including the deflector containing the turbine, as well as dotted line, a variant embodiment.
- FIG. 3 is a perspective view showing the turbine self-aspirating device disposed in the deflector of the device of Figures 1 and 2.
- the device shown in the drawings is intended to enable agitation of a liquid L in a reactor as well as the injection of a gas into this liquid, this gas being preferably, but not exclusively, oxygenated.
- the device comprises a training device 1, for example a motor, arranged above the surface of the liquid L, provided with a rotary shaft outlet 2 extending vertically and partially immersed in the liquid L.
- the output shaft 2 is equipped at its lower end 3 with a propeller 4 immersed in the liquid L.
- the shaft 2 also carries, arranged between the propeller 4 and the surface of the liquid L, a self-aspirating turbine 5 which is consequently immersed in the reactor and can be driven by the output 2 at the same speed as the propeller 4.
- the output shaft 2 is wrapped coaxially by a cylinder 6 connected at its upper end to the device 1, with the interposition of a sealing device 7 known in itself, and whose lower end 6a opens into the turbine 5 coaxially to the tree 2.
- the self-aspirating turbine 5 consists of two superimposed disks 8, 9, placed horizontally, and a set of radial vanes 11 placed between the disks 8, 9 and fixed thereto. 8 in the upper disc is arranged a central hole 12 defined by a projecting collar, into which the lower end 6a of the cylinder 6, which thus delimits, with the edge of said hole 12 an annular space 13.
- an opening 14 injecting a gas into the annular gap delimited by the shaft 2 and by the cylinder 6.
- the gas injection system in the orifice 14 is known per se and not shown.
- the output shaft 2 passes axially through the disks 8 and 9 while being fixed to the lower disk 9, so that when the training device 1 is actuated, the shaft 2 drives the turbine 5 and the propeller 4 in rotation at the same speed.
- the rotation of the turbine 5 creates the suction of the gas arriving through the orifice 14, through the cylinder 6, as well as the suction of a part of the liquid which is introduced by the annular gap 13 left free between the turbine 5 and the cylinder 6.
- This gas-liquid dispersion results in a population of bubbles whose size is mainly between 100 ⁇ m and 2mm.
- the device also comprises means for directing towards the propeller 4 the gas-liquid dispersion expelled radially by the turbine 5 between its 11.
- these means comprise a annular box 16 forming deflector, pierced with two central openings superimposed 17, 18 coaxial with the shaft 2, the diameter of the lower opening 18 being substantially greater than that of the upper opening 17 and substantially equal to that (d) of the turbine 5.
- Means for directing to propeller 4 the dispersion of gas-liquid also comprise a set of plates 19 substantially vertical, forming counter-blades, arranged radially around the baffle box 16 and attached thereto.
- each counter-blade 19 penetrates radially a certain distance inside the deflector casing 16, to which it is fixed by appropriate means known per se, for example welding or riveting.
- the counter-blades 19 can be arranged around the turbine 5 and of the helix 4 in appropriate number at determined angular intervals.
- a notch 21 in which can penetrate ends of blades of the propeller 4.
- Counter-blades 19 extend vertically from one level corresponding substantially to that of the liquid L, over a total height H between 0.7 times and 12 times the diameter d of the turbine 5 ( Figure 1).
- the device for stirring liquid and injecting gas into this liquid which has just been described operates in the following manner.
- the output shaft 2 rotates at the same speed the self-aspirating turbine 5 and the propeller terminal 4.
- the gas is injected or aspirated through the opening 14 in the meantime annular 15 from which it is sucked to the turbine 5, as well as part of the liquid L in the annular gap 13 between the upper plate 8 and the cylinder 6 (as indicated by the arrow in Figure 1).
- At least 90% of the dispersion of bubbles is resumed thanks to the presence of the counter-blades 19 and the deflector 16 which directs the flow to the propeller 4, as indicated by both lateral arrows in FIG.
- the blade 4 consisting of at least two blades 4a, propels the dispersion of the bubbles at a speed of between, for example, 1 and 5m / second towards the bottom of the basin. Sizing and conditions Applied procedures can propel bubbles up to 10 meters deep while maintaining a horizontal speed at the slab sufficient (ie greater than 0.1 m / s) to prevent or prevent the Formation of zones of deposits or solid particles at the bottom of the basin.
- the bubbles projected at the bottom of the pool then rise to the periphery the mobile (4, 5) of agitation around the central axis 2.
- the travel time gas bubbles in the liquid is sufficient to ensure the transfer of the oxygen of the gas phase (if the injected gas is oxygenated) towards the phase liquid. Oxygen can thus be used for breathing needs of the biomass or oxidation of certain compounds.
- the pumping rate induced by the presence of the recovery propeller 4 and counter-blades 19 makes it possible to ensure the mixing of the liquid volume around the mobile 4 stirring in a radius that depends on the power dissipated by propeller 4 (power between 40 and 90% of the power applied to the motor shaft 2). This mixing allows the suspension of sludge and / or solid particles to ensure homogenization of the concentration of sludge and / or particles in all the volumes stirred by the propeller 4.
- the device described above allows for the biological treatment of effluents industrial or urban, by transferring oxygen into activated sludge and stirring the biomass to homogenize the concentration of sludge.
- the deflector 16 which envelops the turbine 5 folds the gas-liquid dispersion towards the propeller 4 which propels the gas bubbles towards the bottom of the reactor, and creates a liquid pumping rate for stirring the reactor.
- the counter-blades 19 make it possible to direct the various liquid and gaseous flows in order to maximize performance in terms of transfer and agitation.
- the counter-blades 19, 4 in the example illustrated in FIGS. drawings, are oriented radially with respect to the axis of the turbine. They are at least two, whose outline matches the geometrical shape of the rotor (propeller).
- Counter-blades have been added to transform the tangential flow into an axial flow directed towards the bottom of the tank. Their number has been defined experimentally, with the aim of spreading the whole circumference gas / liquid dispersion zones rising to the surface.
- the number of blades 4a varies from 2 to 12. It is defined so as to limit the risks clogging compared to the operating range of the turbine ratio Liquid gas.
- the rate of recovery of the gas-liquid dispersion can advantageously be increased by the addition of an additional mobile 22 (Figure 2), for example a propeller with two or more blades.
- This mobile 22 can be attached to the tree of output 2 as shown, and makes it possible to increase the peripheral speed of the liquid in the ring box.
- the stirring speeds are approximately 50 to 1000 rpm.
- the immersion / diameter ratio of the turbine ranges from 0.01 to 5.
- the modified Froude is between approximately 0.1 and 25
- the liquid may be one of the following: activated sludge, effluent from industrial or urban waste, process water, seawater, sludge concentrated.
- the system can operate with systems of bottom transfer of basins to air or to oxygen such than "Ventoxal".
- the system according to the present invention Compared with the Ventoxal system, the system according to the present invention the benefits of allowing to inject gas at atmospheric pressure or slightly lower than this, and increase transfer yields at least 10% to 50% depending on the water level and gas flow.
- the system can be equipped with one or more axial flow mobiles such as that propellers mounted coaxially on the shaft 2.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Description
Les réacteurs dans lesquels ces systèmes permettent d'injecter des gaz contiennent généralement des boues activées. Ces réacteurs peuvent donc être soit des bassins naturels, soit des réacteurs à ciel ouvert et à parois proches, soit des réacteurs fermés, sous pression ou non.
- la zone d'action limitée à un rayon proche de celui du couvercle et à une profondeur d'eau relativement faible,
- l'enrichissement de la phase gazeuse en CO2, N2 et autres gaz issus de l'activité biologique, dans le cas des applications en boues activées, et la nécessité de réaliser des purges provoquant des pertes d'O2,
- la complexité de la régulation de pression sous le couvercle,
- utilisation d'un gaz à pression élevée : nécessité d'utiliser un surpresseur à la suite d'un VSA ou MPSA. (unité de production sur site par adsorption sous pression ou avec régénération sous vide).
- d1 = 0,01 à 0,1 *d (d1 est la distance radiale entre la turbine 5 et chaque contre-pale 19)
- d2 = 0,01 à 0,1 *d (d2 est la distance radiale entre le fond d'une entaille 21 et les extrémités des pales 4a)
- Lcp = 0,5 à 2 * d (Lcp est la largeur de chaque contre-pale)
- Dh = 1 à 2 *d (Dh = diamètre de l'hélice 4)
- L'immersion I qui est la distance entre le niveau du liquide et le disque supérieur de la turbine.
- La vitesse de rotation N
- Le débit gazeux Qg
- la pression d'injection du gaz Pg
- I/d de 0,01 à 5 : valeur nominale = 0,4
- Froude modifié = Fr* = N2 * d2 / g * I = forces d'inertie / forces de gravité
- Fr * = de 0,1 à 25 ; valeur nominale = 1.1 à 2.5
- Fr* < 0,1 => aspiration de gaz très faible
- Fr* > 25 => risque d'engorgement
- Puissance consommée = N3 * d5 * Np avec Np nombre de puissance= f(Fr*)
- Fonctionnement continu :
- Fonctionnement à vitesse de rotation fixe, la régulation du débit gazeux se faisant par un organe de contrôle du débit placé sur la ligne fluide,
- Fonctionnement à vitesse variable et débit gazeux variable afin de se placer en permanence dans les conditions optimales de fonctionnement de la turbine.
- Fonctionnement alterné/séquencé :
Fonctionnement par cycles en alternant des phases d'agitation avec injection de gaz et des phases d'agitation sans injection de gaz, et/ou alternant des phases d'agitation avec des vitesses variables. Ce fonctionnement trouve notamment toute sa justification et son intérêt pour la nitrification/dénitrification en mono-bassin.
- Les apports spécifiques nets (ASN) mesurés en KgO2/kWh absorbés peuvent varier de 0,5 à 8.
- La capacité d'aspiration de la turbine 5 peut atteindre 50 Nm3/h de gaz par kWh consommé par cette turbine.
- Le rapport de puissance dissipé entre l'hélice 4 et la turbine 5 peut varier de 40/60 à 90/10.
- soit dans un réacteur biologique oulet chimique fermé ou ouvert, fonctionnant sous pression ou non, couplé à des procédés de séparation physico-chimique (décanteur, flottateur, membranes, filtres...)
- soit dans un réacteur biologique et/ou chimique fermé fonctionnant sous pression avec contrôle de la teneur en gaz dans le ciel gazeux par l'intermédiaire d'une purge.
- aspiration du gaz à pression faible (à partir de 0,7 bars absolus) permettant une aspiration de l'air atmosphérique ou l'utilisation de l'oxygène produit sur site sans étape de recompression ou provenant d'autres étapes ou procédés du site utilisant des gaz,
- limitation des problèmes de baisse de pH imputable à la réinjection du CO2 produit par les bactéries,
- le mobile de reprise (4) dont la puissance est ajustée suivant les besoins, possède un large rayon d'action et permet de propulser le mélange gaz-liquide en fond de bassin tout en atteignant des niveaux d'agitation satisfaisants, même pour des profondeurs d'eau importantes (7 à 10 mètres environ) .
- possibilité de découpler l'agitation et l'injection de gaz, permettant ainsi les différents modes de conduite exposés précédemment (fonctionnement continu et alterné/séquencé).
Claims (8)
- Dispositif d'agitation d'un liquide (L) dans un réacteur et d'injection d'un gaz dans ce liquide, comprenant un dispositif d'entraínement (1) disposé au-dessus du récipient, pourvu d'un arbre de sortie (2) vertical équipé à son extrémité d'au moins un mobile à flux axial (4) immergé dans le liquide, caractérisé en ce que l'arbre de sortie du dispositif d'entraínement porte également une turbine auto-aspirante (5) immergée dans le réacteur et pouvant être entraínée par l'arbre de sortie (2), en ce que ce dernier est enveloppé coaxialement par un cylindre (6) lié à son extrémité supérieure de manière étanche au dispositif d'entraínement et dont l'extrémité inférieure (6a) débouche dans la turbine, et en ce que dans l'extrémité supérieure du cylindre est percée une ouverture (14) d'injection d'un gaz dans un intervalle annulaire (15) délimité par l'arbre et le cylindre.
- Dispositif selon la revendication 1, caractérisé en ce que la turbine (5) est constituée de deux disques superposés (8, 9) et d'un ensemble d'aubes radiales (11) disposées entre les disques et fixées à ceux-ci, et dans le disque supérieur (8) est agencé un trou central (12) dans lequel pénètre l'extrémité inférieure (6a) du cylindre (6) qui délimite avec le bord dudit trou un espace au moins partiellement annulaire (13) par lequel du liquide peut être aspiré dans la turbine.
- Dispositif selon l'une des revendications 1 et 2, caractérisé en ce qu'il comporte des moyens pour diriger vers le mobile à flux axial (4) la dispersion gaz-liquide expulsée radialement par la turbine (5).
- Dispositif selon la revendication 3, caractérisé en ce que lesdits moyens comprennent un caisson annulaire (16) formant déflecteur, enveloppant la turbine (5) et profilé afin de diriger vers le mobile à flux axial (4) un flux issu radialement de la turbine, une ouverture centrale (18) étant agencée dans la face inférieure de ce caisson, et des plaques (19) sensiblement verticales formant des contre-pales, disposées radialement et fixées au déflecteur (16).
- Dispositif selon la revendication 4, caractérisé en ce que lesdits moyens comprennent en outre un mobile (22) d'agitation additionnel.
- Dispositif selon l'une des revendications 4 ou 5, caractérisé en ce que les contre-pales (19) sont au nombre d'au moins deux et s'étendent verticalement à partir d'un niveau correspondant sensiblement à celui (L) de la surface du liquide sur une hauteur totale (H) comprise entre environ 0,7 fois et 12 fois le diamètre (d) de la turbine (5).
- Dispositif selon l'une des revendications 1 à 6, caractérisé en ce que le mobile à flux axial est une hélice (4).
- Dispositif selon la revendication 7, caractérisé en ce que des entailles radiales (21) sont ménagées dans les contre-pales (19) afin de permettre aux pales (4a) de l'hélice (4) d'y pénétrer.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9812696 | 1998-10-09 | ||
| FR9812696A FR2784311B1 (fr) | 1998-10-09 | 1998-10-09 | Dispositif d'agitation d'un liquide dans un reacteur et d'injection d'un gaz dans ce liquide |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0995485A1 EP0995485A1 (fr) | 2000-04-26 |
| EP0995485B1 true EP0995485B1 (fr) | 2003-06-11 |
Family
ID=9531394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19990402459 Expired - Lifetime EP0995485B1 (fr) | 1998-10-09 | 1999-10-07 | Dispositif d'agitation d'un liquide dans un réacteur et d'injection d'un gaz dans ce liquide |
Country Status (18)
| Country | Link |
|---|---|
| US (1) | US6270061B1 (fr) |
| EP (1) | EP0995485B1 (fr) |
| JP (1) | JP4786775B2 (fr) |
| CN (1) | CN1152735C (fr) |
| AR (1) | AR020767A1 (fr) |
| AT (1) | ATE242658T1 (fr) |
| AU (1) | AU765235B2 (fr) |
| BR (1) | BR9905088B1 (fr) |
| CA (1) | CA2284403C (fr) |
| DE (1) | DE69908731T2 (fr) |
| DK (1) | DK0995485T3 (fr) |
| ES (1) | ES2203034T3 (fr) |
| FR (1) | FR2784311B1 (fr) |
| MA (1) | MA25003A1 (fr) |
| PT (1) | PT995485E (fr) |
| SG (1) | SG74167A1 (fr) |
| TW (1) | TW423994B (fr) |
| ZA (1) | ZA996364B (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12503381B2 (en) | 2020-03-23 | 2025-12-23 | L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés George Claude | Method for optimizing the energy consumption of an aerator in the field of water treatment |
Families Citing this family (47)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU739061B2 (en) * | 1998-06-29 | 2001-10-04 | Lee-Shui Tang | Pond aerating device |
| JP3270435B2 (ja) | 1999-10-04 | 2002-04-02 | 松下電器産業株式会社 | 表示装置およびその輝度制御方法 |
| JP4599686B2 (ja) * | 2000-08-08 | 2010-12-15 | 栗田工業株式会社 | 生物汚泥の攪拌装置及びオゾン処理装置 |
| JP4451991B2 (ja) * | 2001-02-23 | 2010-04-14 | 日本下水道事業団 | 曝気装置 |
| JP3542335B2 (ja) * | 2001-05-25 | 2004-07-14 | テック工業有限会社 | 微細気泡発生装置 |
| CN103464022B (zh) * | 2002-04-17 | 2016-05-18 | 利发利希奥公司 | 扩散器、扩散方法以及氧化水 |
| US6986507B2 (en) * | 2002-09-26 | 2006-01-17 | Spx Corporation | Mass transfer method |
| FR2845682B1 (fr) * | 2002-10-10 | 2004-11-19 | Air Liquide | Procede de reduction des boues d'un traitement biologique de l'eau mettant en oeuvre de l'ozone |
| FR2848472B1 (fr) * | 2002-12-12 | 2005-02-18 | Air Liquide | Dispositif d'agitation d'un liquide et d'injection d'un gaz dans ce liquide a engorgement limite |
| FR2859645A1 (fr) * | 2003-09-17 | 2005-03-18 | Air Liquide | Procede d'amelioration de la capacite d'injection d'un gaz dans un liquide produite par un dispositif d'agitation et d'injection |
| FR2868335B1 (fr) * | 2004-04-02 | 2006-06-02 | Air Liquide | Dispositif d'injection d'un gaz dans un liquide |
| ITVE20040015A1 (it) * | 2004-04-22 | 2004-07-22 | Hydor Srl | Aeratore rotante per acquari |
| FR2884442B1 (fr) * | 2005-04-19 | 2007-05-25 | Air Liquide | Dispositif d'agitation d'un liquide et d'injection d'un gaz dans ce liquide adapte a des bassins de faibles profondeurs |
| US7845223B2 (en) * | 2005-09-08 | 2010-12-07 | General Electric Company | Condensing chamber design |
| EP1767261B1 (fr) * | 2005-09-26 | 2009-12-02 | Dhariwal, Rasiklal Manikchand | Procédé et appareil pour produire de l'eau enrichi en oxygène |
| CH698723B1 (de) * | 2006-10-25 | 2009-10-15 | Mut Tschambermisch Und Trenntechnik Gmbh | Vorrichtung zum Begasen, insbesondere für die mikrobiologische Fermentation und Kultivierung von Zellen. |
| US7699980B2 (en) | 2007-08-24 | 2010-04-20 | Praxair Technology, Inc. | System for activated sludge wastewater treatment with high dissolved oxygen levels |
| US8387957B2 (en) * | 2009-01-29 | 2013-03-05 | Aqua-Aerobic Systems, Inc. | Downflow mixers with gas injection devices and/or baffles |
| CN102188886A (zh) * | 2010-03-02 | 2011-09-21 | 王新冰 | 一种烟气微细泡净化方法及装置 |
| FR2975606B1 (fr) | 2011-05-25 | 2013-05-31 | Air Liquide | Equipement pour l'injection d'un gaz dans un bassin d'epuration |
| KR101440535B1 (ko) * | 2014-07-16 | 2014-09-17 | 장성호 | 자흡식 미세기포 발생장치 |
| CN105800266A (zh) * | 2016-05-30 | 2016-07-27 | 苏州速腾电子科技有限公司 | 抛洒装置 |
| CN105836395A (zh) * | 2016-05-30 | 2016-08-10 | 苏州速腾电子科技有限公司 | 喷洒装置 |
| JP2018069159A (ja) * | 2016-10-28 | 2018-05-10 | ウォーターナビ株式会社 | ディスク回転型微細気泡発生方法及び装置 |
| CN107202065A (zh) * | 2017-07-27 | 2017-09-26 | 洛阳市三诺化工有限公司 | 一种制备tbp磷酸三丁酯萃取剂反应罐用的滚轮 |
| CN107441991A (zh) * | 2017-07-31 | 2017-12-08 | 江苏中超环保股份有限公司 | 一种加药搅拌装置 |
| CN107744730A (zh) * | 2017-11-07 | 2018-03-02 | 山东新蓝环保科技有限公司 | 一种车用尿素溶液快速制造机 |
| US10683221B2 (en) | 2017-12-14 | 2020-06-16 | L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude | Gas injection and recycling apparatus and methods |
| CN107961692A (zh) * | 2018-01-19 | 2018-04-27 | 苏州健雄职业技术学院 | 一种充分搅拌的高效双轴搅拌装置 |
| EP3712736A1 (fr) | 2019-03-22 | 2020-09-23 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Méthode de détection d'anomalies dans une installation de traitement des eaux mettant en oeuvre un appareil d'injection d'oxygène dans un bassin d'épuration |
| EP3712735A1 (fr) * | 2019-03-22 | 2020-09-23 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Méthode de détection d'anomalies dans une installation de traitement des eaux |
| CN110102209A (zh) * | 2019-04-09 | 2019-08-09 | 桐昆集团浙江恒盛化纤有限公司 | 一种适用于燃煤锅炉烟气治理系统的石灰搅拌方法 |
| FR3108407B1 (fr) * | 2020-03-23 | 2022-12-23 | Air Liquide France Ind | Procédé d’optimisation de la consommation énergétique d’un aérateur dans le domaine du traitement des eaux |
| CN111974319B (zh) * | 2020-08-11 | 2022-04-15 | 上海工程技术大学 | 一种用于动力电池的纤维素基智能凝胶生产装置 |
| CN112484583B (zh) * | 2020-11-03 | 2022-08-19 | 西安近代化学研究所 | 一种装填十吨级固液相混合燃料且具有差压搅拌功能的壳体装置 |
| CN112586435B (zh) * | 2020-12-15 | 2023-05-09 | 中国水产科学研究院淡水渔业研究中心 | 一种水产养殖设备、养殖方法 |
| CN112535922A (zh) * | 2020-12-16 | 2021-03-23 | 温州冰锡环保科技有限公司 | 一种空气过滤棉制备处理工艺 |
| CN113289512B (zh) * | 2021-05-11 | 2023-10-27 | 杭州朗索医用消毒剂有限公司 | 一种消毒用品生产设备及其生产方法 |
| US20220401858A1 (en) * | 2021-06-09 | 2022-12-22 | Mott Corporation | Rotary interface for fluid assemblies and related methods of fabrication and use |
| CN113413810B (zh) * | 2021-06-25 | 2022-06-24 | 柳州豪祥特科技有限公司 | 纳米粉体材料的混合装置 |
| CN113480742B (zh) * | 2021-07-06 | 2022-11-08 | 浙江捷发科技股份有限公司 | 一种从造纸黑液硫化处理改性木质素磺酸钠的方法 |
| CN113663631A (zh) * | 2021-08-24 | 2021-11-19 | 连云港诺信食品配料有限公司 | 一种高效双乙酸钠节能反应器 |
| CN113617325B (zh) * | 2021-09-01 | 2022-10-04 | 南京工业大学 | 一种搅拌式气液反应器 |
| CN114515533B (zh) * | 2022-03-11 | 2023-01-13 | 海安国洋机械科技有限公司 | 一种用于纺织的纺织浆液搅拌设备 |
| CN114917793B (zh) * | 2022-05-17 | 2023-05-30 | 恒丰泰精密机械股份有限公司 | 自吸式搅拌器及搅拌设备 |
| KR102826716B1 (ko) * | 2024-12-11 | 2025-07-01 | 측천산업(주) | 다단계 응집제 혼합 장치 및 이를 포함하는 오염 토양 정화 시스템 |
| CN119869419A (zh) * | 2025-03-28 | 2025-04-25 | 西安交通大学 | 一种用于聚萘二甲酸乙二醇酯终缩聚的单轴卧式反应釜 |
Family Cites Families (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2875897A (en) * | 1953-06-22 | 1959-03-03 | Booth Lionel Earl | Flotation machine |
| US3092678A (en) * | 1958-04-29 | 1963-06-04 | Vogelbusch Gmbh | Apparatus for gasifying liquids |
| US2928661A (en) * | 1958-06-09 | 1960-03-15 | Albert S Maclaren | Gas and liquid mixing apparatus |
| US3650950A (en) * | 1969-08-20 | 1972-03-21 | Robert W White | Material shearing mixer and aerator |
| US3776531A (en) * | 1972-03-16 | 1973-12-04 | M Ebner | Apparatus and propeller for entraining fluids in liquids |
| JPS4938464A (fr) * | 1972-08-18 | 1974-04-10 | ||
| NL7304539A (en) * | 1973-04-02 | 1974-10-04 | Aeration of waste or stagnant water - for biological purification without using air compressors | |
| JPS553997B2 (fr) * | 1974-01-25 | 1980-01-28 | ||
| US3972815A (en) * | 1975-01-09 | 1976-08-03 | United States Filter Corporation | Mixing apparatus |
| AU510239B2 (en) * | 1976-06-18 | 1980-06-19 | General Signal Corporation | Liquid aeration impeller |
| US4290885A (en) * | 1977-12-22 | 1981-09-22 | Dochan Kwak | Aeration device |
| CA1101138A (fr) * | 1979-02-05 | 1981-05-12 | Claudio Guarnaschelli | Aerateur |
| US4451155A (en) * | 1983-01-20 | 1984-05-29 | A. R. Wilfley And Sons, Inc. | Mixing device |
| AU569364B2 (en) * | 1984-04-11 | 1988-01-28 | General Signal Corporation | Mixing system using impellor to decrease adhesion on blades |
| JPH0659472B2 (ja) * | 1986-01-24 | 1994-08-10 | 岩崎電気株式会社 | 水処理装置 |
| JPH0545439Y2 (fr) * | 1988-04-11 | 1993-11-19 | ||
| JPH038438A (ja) * | 1989-06-05 | 1991-01-16 | Soken Kagaku Kk | 気液接触装置 |
| SE464915B (sv) * | 1990-03-06 | 1991-07-01 | Flygt Ab | Anordning vid draenkt turbinluftare |
| US5009816A (en) * | 1990-04-26 | 1991-04-23 | Union Carbide Industrial Gases Technology Corporation | Broad liquid level gas-liquid mixing operations |
| BR9205151A (pt) * | 1992-08-17 | 1994-03-01 | Praxair Technology Inc | Dissolucao aumentada de gas |
| FI94317C (fi) * | 1992-10-16 | 1995-08-25 | Outokumpu Mintec Oy | Tapa ja laite kaasun dispergoimiseksi nesteeseen |
| FR2702159B1 (fr) * | 1993-03-05 | 1995-04-28 | Raymond Berchotteau | Appareil pour introduire et diffuser de l'air ou un gaz dans un liquide. |
| JP3103823B2 (ja) * | 1993-12-27 | 2000-10-30 | 野村 政明 | 気液混合装置 |
| US5451348A (en) * | 1994-04-18 | 1995-09-19 | Praxair Technology, Inc. | Variable liquid level eductor/impeller gas-liquid mixing apparatus and process |
| JP3845516B2 (ja) * | 1998-07-03 | 2006-11-15 | 佐竹化学機械工業株式会社 | 撹拌翼及びその撹拌装置 |
| US6109449A (en) * | 1998-11-04 | 2000-08-29 | General Signal Corporation | Mixing system for separation of materials by flotation |
-
1998
- 1998-10-09 FR FR9812696A patent/FR2784311B1/fr not_active Expired - Lifetime
-
1999
- 1999-09-29 CA CA 2284403 patent/CA2284403C/fr not_active Expired - Lifetime
- 1999-09-30 AU AU52566/99A patent/AU765235B2/en not_active Expired
- 1999-10-01 TW TW88116920A patent/TW423994B/zh not_active IP Right Cessation
- 1999-10-05 US US09/412,570 patent/US6270061B1/en not_active Expired - Lifetime
- 1999-10-05 MA MA25805A patent/MA25003A1/fr unknown
- 1999-10-06 SG SG1999005044A patent/SG74167A1/en unknown
- 1999-10-07 AT AT99402459T patent/ATE242658T1/de active
- 1999-10-07 DK DK99402459T patent/DK0995485T3/da active
- 1999-10-07 DE DE1999608731 patent/DE69908731T2/de not_active Expired - Lifetime
- 1999-10-07 ES ES99402459T patent/ES2203034T3/es not_active Expired - Lifetime
- 1999-10-07 ZA ZA9906364A patent/ZA996364B/xx unknown
- 1999-10-07 EP EP19990402459 patent/EP0995485B1/fr not_active Expired - Lifetime
- 1999-10-07 PT PT99402459T patent/PT995485E/pt unknown
- 1999-10-08 AR ARP990105129 patent/AR020767A1/es not_active Application Discontinuation
- 1999-10-08 JP JP28824499A patent/JP4786775B2/ja not_active Expired - Lifetime
- 1999-10-09 CN CNB991205863A patent/CN1152735C/zh not_active Expired - Lifetime
- 1999-10-11 BR BRPI9905088-9A patent/BR9905088B1/pt not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12503381B2 (en) | 2020-03-23 | 2025-12-23 | L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés George Claude | Method for optimizing the energy consumption of an aerator in the field of water treatment |
Also Published As
| Publication number | Publication date |
|---|---|
| BR9905088B1 (pt) | 2009-05-05 |
| US6270061B1 (en) | 2001-08-07 |
| SG74167A1 (en) | 2000-07-18 |
| DE69908731D1 (de) | 2003-07-17 |
| AU5256699A (en) | 2000-04-13 |
| TW423994B (en) | 2001-03-01 |
| AR020767A1 (es) | 2002-05-29 |
| EP0995485A1 (fr) | 2000-04-26 |
| ZA996364B (en) | 2000-04-11 |
| FR2784311A1 (fr) | 2000-04-14 |
| PT995485E (pt) | 2003-10-31 |
| DK0995485T3 (da) | 2003-09-29 |
| ES2203034T3 (es) | 2004-04-01 |
| JP4786775B2 (ja) | 2011-10-05 |
| MA25003A1 (fr) | 2000-07-01 |
| BR9905088A (pt) | 2000-08-22 |
| JP2000107789A (ja) | 2000-04-18 |
| CA2284403C (fr) | 2007-09-25 |
| ATE242658T1 (de) | 2003-06-15 |
| DE69908731T2 (de) | 2004-04-29 |
| CA2284403A1 (fr) | 2000-04-09 |
| AU765235B2 (en) | 2003-09-11 |
| CN1250682A (zh) | 2000-04-19 |
| CN1152735C (zh) | 2004-06-09 |
| FR2784311B1 (fr) | 2000-12-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0995485B1 (fr) | Dispositif d'agitation d'un liquide dans un réacteur et d'injection d'un gaz dans ce liquide | |
| EP0498750B1 (fr) | Installation de mélange de deux phases fluides par agitation mécanique, notamment pour le traitement des eaux par transfert de gaz oxydant, et utilisation d'une telle installation | |
| EP0125162B1 (fr) | Appareil pour la dissolution d'ozone dans un fluide | |
| EP0577713B1 (fr) | Cyclone a double effet d'extraction | |
| EP0366644B1 (fr) | Mélangeur et/ou aérateur pour eaux résiduaires | |
| EP0954373A1 (fr) | Dispositif de brassage et d'aeration d'un liquide et d'elimination de la mousse dans une cuve de traitement de ce liquide | |
| FR2486815A1 (fr) | Degazeur centrifuge de boue de forage | |
| EP1272430A1 (fr) | Dispositif et procede de traitement d'eau par ecumage | |
| EP0459928B1 (fr) | Installation pour le traitement de flux de liquides à contacteur monophasique, et dispositifrecirculateur-dégazeur pour une telle installation | |
| FR2511031A1 (fr) | Dispositif pour l'elaboration de milieux fluides de faible viscosite et de milieux tres visqueux, en particulier pour une fermentation de micro-organismes | |
| FR2868335A1 (fr) | Dispositif d'injection d'un gaz dans un liquide | |
| FR2905608A1 (fr) | Procede et installation pour la mise en contact de l'ozone dans un flux de liquide,en particulier d'eau potable ou d'eau residuaire. | |
| WO2013175150A1 (fr) | Procede et dispositif de traitement d'epuration d'effluents liquides, en particulier aqueux par photocatalyse | |
| WO2003084652A2 (fr) | Procede et reacteur de mise en contact gaz/liquide par dispersion, et applications | |
| FR2633531A1 (fr) | Machine a flottation mecanique | |
| CA2939691C (fr) | Procede et dispositif de dispersion de gaz dans un liquide | |
| EP0970735A1 (fr) | Procédé et installation pour le traitement d'un milieu réactionnel susceptible de provoquer un moussage expansif | |
| BE814452A (fr) | Appareil pour dissoudre de grandes quantites d'oxygene dans de l'eau | |
| CA3210647A1 (fr) | Digesteur a volume de ciel gazeux reduit | |
| CA2106961A1 (fr) | Dispositif et procede de traitement par voie biologique de fluides a depolluer | |
| FR2557092A1 (fr) | Installation pour le traitement par coagulation et floculation de liquides contenant des matieres colloidales et/ou non colloidales | |
| FR2479017A1 (fr) | Dispositif pour le melange de liquide, et son application a un procede et a une machine de refrigeration | |
| FR2750889A1 (fr) | Procede et dispositif d'injection d'un gaz dans un liquide | |
| FR2594112A1 (fr) | Procede et installation d'epuration biologique d'eaux usees | |
| FR2495494A1 (fr) | Turbine de dispersion de gaz dans un liquide |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
| AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
| 17P | Request for examination filed |
Effective date: 20001026 |
|
| AKX | Designation fees paid |
Free format text: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
| AXX | Extension fees paid |
Free format text: AL PAYMENT 20001026;LT PAYMENT 20001026;LV PAYMENT 20001026;MK PAYMENT 20001026;RO PAYMENT 20001026;SI PAYMENT 20001026 |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: ROBIN INDUSTRIES S.A. Owner name: L'AIR LIQUIDE, S.A. A DIRECTOIRE ET CONSEIL DE SUR |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
| AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO SI |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20030611 Ref country code: GB Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20030611 |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
| REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: FRENCH |
|
| REF | Corresponds to: |
Ref document number: 69908731 Country of ref document: DE Date of ref document: 20030717 Kind code of ref document: P |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20030916 Year of fee payment: 5 |
|
| REG | Reference to a national code |
Ref country code: SE Ref legal event code: TRGR |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IE Payment date: 20030929 Year of fee payment: 5 |
|
| REG | Reference to a national code |
Ref country code: DK Ref legal event code: T3 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20031007 |
|
| REG | Reference to a national code |
Ref country code: GR Ref legal event code: EP Ref document number: 20030403702 Country of ref document: GR |
|
| LTIE | Lt: invalidation of european patent or patent extension |
Effective date: 20030611 |
|
| GBV | Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed] |
Effective date: 20030611 |
|
| REG | Reference to a national code |
Ref country code: IE Ref legal event code: FD4D |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PFA Owner name: L'AIR LIQUIDE, S.A. A DIRECTOIRE ET CONSEIL DE SU Free format text: ROBIN INDUSTRIES S.A.#10, RUE DU BOIS-GASSEAU#77210 SAMOREAU (FR) $ L'AIR LIQUIDE, S.A. A DIRECTOIRE ET CONSEIL DE SURVEILLANCE POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE#75, QUAI D'ORSAY#75321 PARIS CEDEX 07 (FR) -TRANSFER TO- L'AIR LIQUIDE, S.A. A DIRECTOIRE ET CONSEIL DE SURVEILLANCE POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE#75, QUAI D'ORSAY#75321 PARIS CEDEX 07 (FR) $ MILTON ROY MIXING#10, RUE DU BOIS-GASSEAU#77210 SAMOREAU (FR) |
|
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: PC2A Ref country code: ES Ref legal event code: FG2A Ref document number: 2203034 Country of ref document: ES Kind code of ref document: T3 |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| NLT1 | Nl: modifications of names registered in virtue of documents presented to the patent office pursuant to art. 16 a, paragraph 1 |
Owner name: MILTON ROY MIXING Owner name: L'AIR LIQUIDE, S.A. A DIRECTOIRE ET CONSEIL DE SUR |
|
| 26N | No opposition filed |
Effective date: 20040312 |
|
| REG | Reference to a national code |
Ref country code: PT Ref legal event code: PD4A Free format text: MILTON ROY MIXING FR Effective date: 20040427 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 17 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 18 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 19 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 20 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: LU Payment date: 20181019 Year of fee payment: 20 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20181019 Year of fee payment: 20 Ref country code: PT Payment date: 20180920 Year of fee payment: 20 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 20181022 Year of fee payment: 20 Ref country code: DE Payment date: 20181019 Year of fee payment: 20 Ref country code: MC Payment date: 20181012 Year of fee payment: 20 Ref country code: DK Payment date: 20181023 Year of fee payment: 20 Ref country code: SE Payment date: 20181019 Year of fee payment: 20 Ref country code: FI Payment date: 20181022 Year of fee payment: 20 Ref country code: GR Payment date: 20181011 Year of fee payment: 20 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 20181019 Year of fee payment: 20 Ref country code: ES Payment date: 20181123 Year of fee payment: 20 Ref country code: IT Payment date: 20181022 Year of fee payment: 20 Ref country code: FR Payment date: 20181022 Year of fee payment: 20 Ref country code: CH Payment date: 20181019 Year of fee payment: 20 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R071 Ref document number: 69908731 Country of ref document: DE |
|
| REG | Reference to a national code |
Ref country code: NL Ref legal event code: MK Effective date: 20191006 |
|
| REG | Reference to a national code |
Ref country code: DK Ref legal event code: EUP Effective date: 20191007 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| REG | Reference to a national code |
Ref country code: AT Ref legal event code: MK07 Ref document number: 242658 Country of ref document: AT Kind code of ref document: T Effective date: 20191007 |
|
| REG | Reference to a national code |
Ref country code: BE Ref legal event code: MK Effective date: 20191007 |
|
| REG | Reference to a national code |
Ref country code: SE Ref legal event code: EUG |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 20191017 |
|
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20200903 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 20191008 |